San Francisco,California

SAN FRANCISCO, CALIFORNIA

 

 

"Wind drifted Pacific Ocean beach sand piled up on the guard rail between [the] beach to the west and south-bound section of "Great Highway" to the east. This is immediately north of where Sloat Avenue intersects with Great Highway." Patrick F. Fields, Collector

 

 

GRAIN DISTRIBUTION CHARACTERISTICS (AGI CHART)

International Space Station 800mm Photograph Image credit:  Image Science and Analysis Laboratory, NASA Johnson Space Center

GRAIN SHAPE CHARACTERISTICS

(PREPARED BY GAMMA ZETA CHAPTER , SIGMA GAMMA EPSILON, KENT STATE UNIVERSITY - AGI CHART))

Roundness is the degree of smoothing due to abrasion of sedimentary particles. It is expressed as the ratio of the average radius of curvature of the edges or corners to the radius of curvature of the maximum inscribed sphere.

The sphericity of a particle is: the ratio of the surface area of a sphere (with the same volume as the given particle) to the surface area of the particle.

     
     

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